KR20180023150A - Air conditioning system for automotive vehicles - Google Patents

Abstract

The present invention relates to an air conditioning device for a vehicle. The pair conditioning device is capable of accurately recognizing an indoor discharge air temperature even when a vehicle is sealed as a passenger closes a side vent grill, thereby fundamentally preventing a ″recognition error″ of a discharge air temperature due to the closing of the side vent grill and a ″malfunction error″ caused thereby. To achieve this purpose, the air conditioning device for a vehicle comprises: a plurality of discharge air temperature sensors respectively installed inside at least two air discharge vent grills to detect an indoor discharge air temperature; a control unit for variably controlling the opening position of a temp door according to the discharge air temperature inputted from the discharge air temperature sensors; and a vent grill closing sensing means for sensing the closing of a specific air discharge vent grill when the specific air discharge vent grill is closed from among the air discharge vent grills in which the discharge air temperature sensors are installed. The control unit controls the temp door on the basis of the discharge air temperature inputted from a discharge air temperature sensor of the unclosed air discharge vent grill side, excluding the discharge air temperature inputted from the discharge air temperature sensor of the specific air discharge vent grill which is closed while entering a vent grill close compensation mode when the specific air discharge vent grill is detected to be closed in a vent grill close detection means.

Description

TECHNICAL FIELD [0001] The present invention relates to an air conditioning system for an automobile,

The present invention relates to a vehicle air conditioner, and more particularly, to a vehicle air conditioner capable of correctly recognizing a temperature of a vehicle-interior discharge air even when a passenger closes and closes a side vent grill, And a "operation error phenomenon" caused thereby.

In recent years, automotive air conditioners have been improved in an automatic control system.

The automatic control system air conditioner (hereinafter referred to as "air conditioner") detects the " interior / exterior temperature conditions "through various sensors, Quot; target discharge temperature "is calculated.

And automatically controls the air conditioner compressor, heater, blower and temp door according to the calculated "target discharge temperature".

Therefore, the temperature of the air discharged into the car interior is automatically adjusted to match the "target discharge temperature ". Thereby, the "discharge air temperature" in the car interior is controlled in an optimum state in accordance with the " second indoor / outdoor temperature condition "

On the other hand, such an air conditioner sometimes deviates from the "target discharge temperature" while changing the "discharge air temperature" in the car according to the traveling environment of the vehicle. In this case, Quot; target discharge temperature "of the vehicle interior while being actively controlled in accordance with the result, and to control the" discharge air temperature "

For example, when the "discharge air temperature" in the car interior changes to be lower than the "target discharge temperature" in accordance with the running environment change of the vehicle in the "cooling mode ", the opening position of the tempo door is actively controlled, And raises the "discharge air temperature" of the room to the "target discharge temperature ".

On the other hand, when the "discharge air temperature" in the car interior is changed to be higher than the "target discharge temperature ", the opening position of the tempo door is actively controlled to lower the" discharge air temperature " .

As a result, the air conditioner is actively controlled in accordance with the deviation of the "discharge air temperature" of the vehicle compartment with the "target discharge temperature" .

Therefore, the "discharge air temperature" of the car interior can maintain the "target discharge temperature ", thereby enabling the temperature of the car interior to always be comfortably controlled.

On the other hand, the "discharge air temperature" in the interior of the vehicle is sensed by a discharge air temperature sensor. The discharge air temperature sensor 1, as shown in FIGS. 1 and 2, The interior portions of the side vent grilles 3 and 5 on the driver's seat and the passenger's seat side and the inner portions of the floor vent grilles 7 and 9 on the driver's seat and the passenger's seat side, It is common to install four places in total.

The discharge air temperature sensor 1 senses the "discharge air temperatures" discharged through the side vent grilles 3 and 5 and the floor vent grilles 7 and 9 on both the driver's seat and the passenger's seat respectively, And provides "discharge air temperature" data to the air conditioner.

Thus, the air conditioner can automatically control the air conditioner, the heater, the blower, and the tempo door based on the "discharged air temperature" inputted from the discharge air temperature sensors 1. [

However, in such a conventional air conditioner, as shown in Figs. 1 and 2, occasionally, at least one of both side vent grilles 3 and 5 is occasionally closed by a passenger in the passenger compartment of the passenger compartment. The air in the air conditioner can not flow to the closed side vent grilles 3 and 5 so that the discharge air temperature sensor 1 on the side vent grill 3 and 5 side can sense the correct " There is no disadvantage.

In particular, since the air in the air conditioner does not flow to the sides of the closed side vent grilles 3 and 5, the discharge air temperature sensor 1 on the side vent grill 3, 5 side is connected to the side vent grill 3, It is inevitable to detect the temperature of the air stagnated inside. As a result, the discharge air temperature sensor 1 can not accurately detect the "discharge air temperature ".

Because of this disadvantage, the discharge air temperature sensor 1 has to provide the incorrect "discharge air temperature" data to the air conditioner, and as a result, the air conditioner can be controlled on the basis of an incorrect " There is a problem that there is only one.

And because of such a problem, the air conditioning apparatus is disadvantageous in that an operating error occurs due to an incorrect "discharge air temperature" data provided in the discharge air temperature sensor 1. [

For example, when the "target discharge temperature" is 60 DEG C in the "heating mode ", the air conditioner discharges air at a temperature of 60 DEG C which is the" target discharge temperature ". At this time, Air at a temperature of about 60 DEG C which is the "target discharge temperature" is discharged to the opened "center and floor vent grill" side, compared with (A), the stagnant air on the closed side vents 3, The temperature is maintained at a significantly lower temperature, for example, 10 DEG C or lower.

Therefore, the discharge air temperature sensor 1 on the closed side vent grill 3, 5 side must be able to sense the temperature of 10 占 폚 and provide it to the air conditioner. As a result, Air temperature "is assumed to be 10 ° C, and based on this, the opening position of the tempdoor is controlled to the maximum heating position (Max Hot) side in order to adjust the" tea compartment air temperature "to 60 ° C There is a disadvantage in that it can not be done.

As a result, the air conditioning apparatus is subjected to an operating error that excessively raises the temperature of the discharged air. As a result, the air discharge vent grilles 3, 5, 7, (B), and many users are dissatisfied with such a drawback.

As another example, when the "target discharge temperature" is 10 DEG C in the "cooling mode ", the air conditioner discharges air at a temperature of 10 DEG C which is the" target discharge temperature " Air at a temperature of about 10 DEG C which is the "target discharge temperature" is discharged to the opened "center and floor vent grill" side, compared with (C), the stagnant air on the closed side vent grill 3, 5 side is much higher For example, a temperature of 30 DEG C or higher.

Therefore, the discharge air temperature sensor 1 on the closed side vent grill 3, 5 side must be able to sense the temperature of 30 占 폚 and provide it to the air conditioner. As a result, Air temperature "is 30 ° C. Based on this, the opening position of the tempo door is controlled to the maximum cooling position (Max Cool) side in order to set the" in-car discharge air temperature "to 10 ° C. which is the" target discharge temperature " There is a disadvantage in that it can not be done.

As a result, the air-conditioning apparatus generates an operating error that excessively lowers the temperature of the discharged air. As a result, the air discharge vent grilles 3, 5, 7, Is discharged (D).

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle air conditioner capable of correctly recognizing a temperature of a discharged air of a vehicle without error even when a passenger closes and closes a side vent grill There is.

It is another object of the present invention to provide an air conditioning system for a vehicle which can accurately detect the temperature of the air discharged from a vehicle even when a passenger closes and closes the side vent grill, And it is an object of the present invention to provide an air conditioner for a vehicle that can fundamentally prevent "an operation error phenomenon ".

It is a further object of the present invention to provide an air conditioning system for a vehicle that accurately recognizes a temperature of a discharged air of a vehicle regardless of whether a side vent grill is closed or not by accurately recognizing a temperature of a discharged air of a vehicle even if a passenger closes and closes a side vent grille And it is an object of the present invention to provide an air conditioner for a vehicle which can accurately control the temperature of a discharged air in a car regardless of whether or not the side vent grill is closed.

It is another object of the present invention to provide an air conditioner that can accurately control the temperature of the discharged air of a car regardless of whether the side vent grill is closed or not, And an air conditioner for a vehicle.

In order to achieve the above object, a vehicle air conditioning system according to the present invention comprises: a plurality of discharge air temperature sensors respectively installed inside at least two or more air discharge vent grilles so as to detect the temperature of a discharge air of a car; And a control unit for variably controlling the opening position of the tempo door according to the temperature of the discharged air inputted from the air temperature sensors. The air conditioning apparatus according to any one of the preceding claims, And a vent grill closing detecting means for detecting a closing of the specific air discharge vent grill when the grill is closed, wherein the control unit controls the vent grill closing detecting means when the specific air discharge vent grille is detected as being closed by the vent grill closing detecting means , A specific air discharge vent that is closed while entering the vent grill close compensation mode, and a discharge Temperature also is to be characterized in that for controlling the temperature control door based on the rule, and that is not datchyeo other air discharge vent grill discharge side of the discharged air temperature input from the air temperature sensor.

Preferably, the vent grill closing detecting means includes an air discharging mode detecting means for detecting whether the air is discharged from all of the air discharging vent grills provided with the discharging air temperature sensor; When it is determined that the air is discharged from all the air discharge vent grilles provided with the discharge air temperature sensor as a result of the detection of the air discharge mode sensing means, A comparison is made as to whether or not a temperature deviation greater than or equal to a predetermined reference temperature deviation is generated among the discharged air temperatures among the discharged air temperatures. When it is detected that a temperature deviation of more than the reference temperature deviation is generated, And the controller determines that the on-sensor-side air discharge vent grille is closed.

When it is confirmed that the air is discharged from all the air discharge vent grilles provided with the discharge air temperature sensor as a result of the detection of the air discharge mode sensing means, And detects the occurrence of a temperature deviation of more than the reference temperature difference by comparing the discharged air temperatures inputted from the discharge air sensors of the discharge vent grill with each other.

And the discharge air temperature sensor is installed in an inner portion of the side vent grill on the driver's seat and the front passenger seat side and an inner portion of the floor vent grille on the driver's seat and the front passenger seat side among the air discharge vent grilles, The vent grill closing detecting means detects a closing of the side vent grill on the driver's seat side or detects a closing of the side vent grille on the passenger seat side among the air discharge vent grills provided with the discharge air temperature sensor, Sensing the closing of both the side vents grille on both the driver's seat and the passenger's seat; Wherein the control unit excludes the discharged air temperature of the closed ventilator side discharge air temperature sensor when it is confirmed that at least one of both the driver seat and the side vent grilles on the passenger seat side is closed from the vent grill close detection means, And controls the tempo door on the basis of the discharge air temperature of the discharge air temperature sensor on the floor vent grill side.

According to the automotive air conditioner of the present invention, when the side vent grille is closed, the "discharge air temperature" on the closed side vent grill side is excluded and the air ventilation device The air conditioning apparatus can be accurately controlled despite the detection error of the "discharge air temperature" due to the closing of the side vent grille.

In addition, despite the detection error of the "discharge air temperature" due to the closing of the side vent grill, the air conditioner can be accurately controlled, so that the temperature of the discharge air in the car can be accurately controlled regardless of whether the side vent grill is closed It is effective.

In addition, since the temperature of the discharge air of the car can be accurately controlled irrespective of whether the side vent grill is closed or not, it is possible to keep the temperature of the car always pleasant regardless of whether or not the side vent grille is closed.

1 is a perspective view of a vehicle interior showing a discharge air temperature sensor of a conventional automotive air conditioner;
2 is a sectional view showing a state in which a discharge air temperature sensor of a conventional automotive air conditioner is installed inside a side vent grill,
FIG. 3 is a graph showing an operation example of a conventional air conditioner. In the heating mode, when the side vent grill is closed, the air is controlled based on the discharged air temperatures sensed by the respective air discharge vent and the respective discharge air temperatures A graph showing the opening position of the tempdoor,
FIG. 4 is a graph showing an example of operation of a conventional air conditioner. In the cooling mode, when the side vent grill is closed, it is controlled based on the discharge air temperatures sensed by the respective air discharge vent and the respective discharge air temperatures A graph showing the opening position of the tempdoor,
5 is a view showing a configuration of a vehicle air conditioner according to the present invention,
6A and 6B are a flowchart showing an operation example of a vehicle air conditioner according to the present invention,
FIG. 7 is a graph showing an example of operation of the automotive air conditioner according to the present invention. In the heating mode, when the side vent grill is closed, the discharge air temperature detected by each air discharge vent and the discharge air temperature A graph showing the opening position of the controlled temp door,
8 is a graph showing an example of operation of the vehicle air conditioner according to the present invention. In the cooling mode, when the side vent grille is closed, the air temperature detected by each air discharge vent and the temperature of each discharge air And the opening position of the controlled temp door.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a vehicle air conditioner according to the present invention will be described in detail with reference to the accompanying drawings (the same components as those in the prior art are denoted by the same reference numerals).

First, the air conditioner of the automatic control system will be briefly described with reference to FIG. 5 before examining the features of the vehicle air conditioner according to the present invention.

The air conditioning system of the automatic control system is a system in which the data of the "indoor indoor / outdoor temperature condition" inputted and the data of the indoor indoor / outdoor temperature condition are inputted through the temperature control switch 16 The controller 20 processes the input "user set temperatures" to calculate the "target discharge temperature ".

The control unit 20 controls the air conditioner compressor 30, the heater core 32, the blower 34, the tempo door 35, the intake door 36, the mode door 38 ), And so on.

Therefore, the temperature, air flow rate, and discharge direction of the air blown into the passenger compartment are automatically adjusted in accordance with the "target discharge temperature ". This keeps the temperature of the interior of the car always comfortable.

On the other hand, the control unit 20 continuously receives the "car interior discharge air temperature" from the discharge air temperature sensor 1 and compares the "car interior discharge air temperature"

As a result of the comparison, when a deviation occurs between the " inside-vehicle discharge air temperature "and the" target discharge temperature ", the control unit 20 determines that the " And actively controls the opening position of the tempo door 35 according to the magnitude of the deviation to actively and variably control the "car interior discharge air temperature ".

In particular, the "car interior discharge air temperature" is variably controlled so as to converge to the "target discharge temperature ". Thus, the "inside-compartment discharge air temperature" is corrected in accordance with the "target discharge temperature ". As a result, the "inside-vehicle discharge air temperature" enables the "target discharge temperature" to be maintained.

1, the discharge air temperature sensor 1 includes an inner side portion of the driver's seat and the side vents 3, 5 on the passenger seat side and floor vent grills 7, 9 on the driver's seat side and the passenger's seat side, Inner side, total 4 places.

Next, the features of the air conditioner for a vehicle according to the present invention will be described in detail with reference to FIG. 5 and FIG.

First, a vehicle air conditioner of the present invention includes at least one of air discharge vent grills 3, 5, 7 and 9 provided with a discharge air temperature sensor 1, for example, both side vent grills 3 and 5 And a vent grill close sensing means 40 for sensing the closing of these side vent grilles 3, 5 when one is closed.

The ventilating grill closing detecting means 40 includes an air discharging mode detecting means for detecting whether the air is discharged in all of the air discharging vent grills 3, 5, 7, 9 provided with the discharging air temperature sensor 1 42) and the data input from the air discharge mode sensing means 42 and the "discharge air temperature" data inputted from the discharge air temperature sensors 1 of the respective air discharge vent grilles 3, 5, 7, 9 And a determination unit 44 for determining whether or not the air discharge vent grill 3, 5, 7, 9 is closed.

The air discharge mode detection means 42 includes an automatic control unit (not shown) for automatically controlling the "air discharge mode ".

The automatic control unit derives the optimum "air discharge mode" according to the "vehicle indoor / outdoor temperature condition" and the "user set temperature", and then automatically sets the "air discharge mode" of the air conditioner according to the derived "air discharge mode" 5, 7 and 9, in which the discharge air temperature sensor 1 is installed, through the "air discharge mode control signal" for automatically controlling the "air discharge mode" Thereby enabling the user to detect whether the mode is the ejection mode.

For example, it is possible to detect whether the "air discharge mode" is a vent mode, a bi-level mode, or an all mode.

For reference, the vent mode, the bi-level mode and the all mode are modes in which air is discharged to both the side vent grilles (3, 5) and both floor vent grills (7, 9) on the driver's seat and the passenger's seat side.

On the other hand, the air discharge mode sensing means 42 may include an air discharge mode selection switch (not shown) as the case may be.

The air discharge mode selection switch is a switch for selecting the "air discharge mode" of the air conditioner. When the user selects a mode in which air is discharged to all of the air discharge vent grilles 3, 5, 7, 9, For example, if you select vent mode or bi-level mode or all mode, you will detect this "air discharge mode".

The judgment unit 44 is a mode in which air is discharged from all the air discharge vent grilles 3, 5, 7 and 9 provided with the discharge air temperature sensor 1 as a result of the detection of the air discharge mode detection means 42 And compares the "discharge air temperature" data input from the discharge air temperature sensors 1 of the respective air discharge vent grills 3, 5, 7 and 9.

Especially, at least one of the "discharge air temperature" inputted from the discharge air temperature sensors 1 of the respective air discharge vent grills 3, 5, 7 and 9 and the " Reference temperature deviation ", for example, "20 占 폚" or more.

As a result of the comparison, when at least one of them is at least "20 DEG C ", the judging unit 44 judges that the temperature of the discharge air temperature sensor 1 Of the air discharge vent grilles 3, 5, 7, and 9 are closed.

For example, when the temperature of the "discharge air temperature" inputted from the discharge air temperature sensor 1 of the driver's seat side vent grill 3 exceeds a temperature difference of "20 占 폚" It is judged that the corresponding driver's seat side vent grill 3 of the discharge air temperature sensor 1 in which a temperature deviation of "20 占 폚" or more is generated is closed.

The determination unit 44 determines that the discharge air temperature sensor 1 of the driver's seat side vent grille 3 is in a state of correcting the "discharge air temperature" as the driver's seat side vent grill 3 is closed And provides the control unit 20 with the "discharge air temperature sensing error signal S1" on the side of the driver's seat side vent grill 3 in accordance with the recognition.

Here, the control unit 20 can directly determine whether the air discharge vent grilles 3, 5, 7, and 9 are closed or not, instead of the determination unit 44.

In this case, the control unit 20 compares the data input from the air discharge mode sensing unit 42 with the data input from the discharge air temperature sensors 1 of the respective air discharge vent grills 3, 5, 7, and 9, The air discharge vent grilles 3, 5, 7, and 9 are directly judged as to whether or not the air discharge vent grills 3, 5, 7, and 9 are closed.

On the other hand, the determination unit 44 determines that air is discharged from all the air discharge vent grills 3, 5, 7, and 9 provided with the discharge air temperature sensor 1 as a result of the detection of the air discharge mode sensing unit 42 Even if it is sensed, it is not immediately immediately to compare the "discharge air temperatures" inputted from the discharge air temperature sensors 1 of the respective air discharge vent grills 3, 5, 7 and 9, .

For example, as a result of detection by the air discharge mode detecting means 42, the "air discharge mode" enters the vent mode, the bi-level mode or the all mode, and all the air discharge vent grills Discharge air temperatures "inputted from the discharge air temperature sensors 1 of the respective air discharge vent grills 3, 5, 7 and 9, even if the air is discharged from the discharge air vents 3, 5, 7 and 9 Quot; 30 seconds "elapsed without performing comparison processing.

The reason for this configuration is that even if the "air discharge mode" enters the vent mode, the bi-level mode or the all mode and air is discharged to all of the air discharge vent grills 3, 5, 7, 9, , The discharge air temperature sensors 1 of the respective air discharge vent grills 3, 5, 7 and 9 correct the "discharge air temperature" due to the stagnant air in the respective air discharge vent grills 3, 5, I can not detect it.

Therefore, by comparing the "discharge air temperatures" inputted from the respective discharge air temperature sensors 1 after elapse of about "30 seconds" after entering the vent mode or the bi-level mode or the all mode, Quot; temperature "data.

5, the control unit 20 determines whether or not the discharge air temperature of the specific air discharge vent grill 3, 5, 7, 9 from the determination unit 44 of the vent grill close detection means 40 For example, when the "discharge air temperature sensing error signal S1" on the side of the driver's seat side vent grille 3 is inputted, the driver's seat side vent grill 3 is closed , It is judged that the "discharge air temperature" data inputted from the discharge air temperature sensor 1 on the driver's seat side vent grill 3 side is inaccurate.

In this case, the control unit 20 enters the "vent grill close compensation mode 22" and the control unit 20 enters the "vent grill close compensation mode 22" Input from the discharge air temperature sensor 1 of the remaining air discharge vent grilles 5, 7 and 9 which are not closed and which are not closed from the "discharge air temperature" The air conditioner is controlled based on the " discharge air temperature ". For example, on the basis of the "discharge air temperature" of the discharge air temperature sensor 1 provided on the floor vent grill 7, 9 side.

Therefore, even if the passenger closes and closes the side vent grilles 3 and 5, the control unit 20 can accurately recognize the "car interior discharge air temperature" without error. Thereby, it is possible to prevent the "recognition error" of the "discharge air temperature " caused by the closing of the side vent grills 3 and 5 and thereby the" operation error phenomenon &

Since the control section 20 can accurately recognize the "car interior discharge air temperature" even if the passenger closes and closes the side vent grilles 3 and 5, the control section 20 determines whether or not the side vent grilles 3 and 5 are closed It is possible to accurately recognize "the temperature of the discharged air in the car"

As a result, regardless of whether or not the side vent grilles 3 and 5 are closed, the "indoor air temperature" can be accurately controlled, It is possible to keep the temperature always pleasant.

On the other hand, after the entry of the vent grill close compensation mode 22, the control unit 20 sets the discharge air temperature sensor 1 of the unclosed air discharge vent grill 3, 5, 7, Quot; temperature ", this control is configured to be continued until the start of the vehicle is turned OFF.

For example, after entering the "vent grill close compensation mode 22", when the control of the air conditioner is started based on the "discharge air temperature" of the discharge air temperature sensor 1 on the floor vent grill 7, 9 , The "discharge air temperature" of the discharge air temperature sensor 1 on the side of the floor vent grille 7, 9 is maintained at the reference value while maintaining the "vent grill close compensation mode 22" until the start of the vehicle is turned off So as to control the air conditioning system.

However, the control unit 20 may be configured such that the start-up of the vehicle is turned off or the "air discharge mode" is switched to a mode other than the vent mode, If the mode is not a mode in which air is discharged from all the air discharge vent grills 3, 5, 7 and 9, for example, the mode is changed to the deep mode (Mix Mode), the floor mode And is released from the "vent grill close compensation mode 22" when switched.

The control unit 20 released from the "vent grill close compensation mode 22" does not control the air conditioner based on the "discharge air temperature" of the discharge air temperature sensor 1 or the floor vent grill 7, 9) side discharge air temperature sensor 1 based on only the "discharge air temperature"

In particular, when the "air discharge mode" is controlled in the deep mode, it is configured not to control the air conditioner based on the "discharge air temperature ". When the " air discharge mode "is controlled in the mix mode or the floor mode, it is configured to control the air conditioning system on the basis of only the" discharge air temperature "of the discharge air temperature sensor 1 on the floor vent grill 7, 9 .

Next, an operation example of the present invention having such a configuration will be described with reference to Figs. 5 to 8. Fig.

6A and 6B and 5, when all the air discharge vent grills 3, 5, 7, and 9 having the discharge air temperature sensor 1 installed in the state that the air conditioner is ON (S101) (Step S103). For example, it is judged whether the mode has entered the vent mode, the bi-level mode, or the all mode.

As a result of the determination, if the user enters any one of the vent mode, the bi-level mode, and the all mode, it is determined again whether or not the "reference time" For example, it is determined again whether "30 seconds" has elapsed.

As a result of the judgment, if "30 seconds" has elapsed, the control unit 20 judges whether or not the "discharge air temperatures" inputted from the discharge air temperature sensors 1 of the respective air discharge vent grills 3, 5, , It is determined whether or not a "temperature deviation" exceeding the "reference temperature deviation" is generated relative to the others (S107).

As a result of the determination, if there is a "temperature deviation" higher than or equal to the "reference temperature deviation ", the control unit 20 determines whether or not the air discharge bout of the discharge air temperature sensor 1 It is recognized that the grilles 3, 5, 7, and 9 are closed (S109).

For example, when the temperature of the "discharge air temperature" inputted from the discharge air temperature sensor 1 of the driver's seat side vent grill 3 exceeds a temperature difference of "20 DEG C" , It is recognized that the driver's seat side vent grill 3 is closed.

When the driver's seat side vent grill 3 is closed, the control unit 20 determines that the discharge air temperature sensor 1 of the driver's seat side vent grille 3 is in the correct "discharge air temperature" The control unit 20 proceeds to the vent grill close compensation mode 22 (S111).

The controller 20 which has entered the ventilator closing compensation mode 22 excludes the "discharge air temperature" inputted from the discharge air temperature sensor 1 of the closed driver's seat side vent grille 3, (Step S113) based on the "discharge air temperature" of the discharge air temperature sensor 1 on the side of the remaining air discharge vent grilles 5, 7 and 9. For example, the air conditioner is controlled on the basis of the "discharge air temperature" of the discharge air temperature sensor 1 on the floor vent grill 7, 9 side.

Then, the air conditioner is fundamentally prevented from "recognition error" of "discharge air temperature " due to closing of the side vent grilles 3 and 5 and thereby resulting in" operation error phenomenon ".

7, the discharge air temperature sensor 1 on the side vent grill 3, 5 side is closed by the closing of the side vent grilles 3, 5 at the time of "heating mode" (10 DEG C) lower than the discharge temperature (60 DEG C) ", the detection temperature on the sides of the side vent grilles 3 and 5 is excluded and the discharge air temperature on the open floor vent grill 7, Since the "discharge air temperature" of the sensor 1 is recognized as the actual "discharge air temperature", the "detection error" of the "discharge air temperature" due to the closing of the side vent grilles 3, 5 is originally prevented.

As a result, despite the "discharge air temperature" detection error on the side vents 3, 5 side, the tempdoor 35 is normally controlled without an "operating error ". Thus, the temperature of the air discharged from each of the air discharge vent grills 5, 7, 9 is precisely controlled in accordance with the "target discharge temperature (60 ° C.)".

8, when the discharge air temperature sensor 1 on the side vent grill 3, 5 side is closed in accordance with the closing of the side vent grill 3, 5 in the "cooling mode" (30 ° C.) higher than the discharge temperature (10 ° C.) ", the detection temperature on the side vent grill (3, 5) side is excluded and the discharge air temperature Since the "discharge air temperature" of the sensor 1 is recognized as the actual "discharge air temperature", the "detection error" of the "discharge air temperature" due to the closing of the side vent grilles 3, 5 is originally prevented.

As a result, despite the "discharge air temperature" detection error on the side vents 3, 5 side, the tempdoor 35 is normally controlled without an "operating error ". Thus, the temperature of the air discharged from each of the air discharge vent grills 5, 7, 9 is precisely controlled in accordance with the "target discharge temperature (10 ° C.)".

6A, 6B and 5, after the step S113, the control unit 20 switches the air discharge mode to another mode other than the ventilation mode, the bi-level mode, and the all mode (S115). For example, it is determined whether the mode has been switched to the deep mode, the mix mode, or the floor mode.

As a result of the determination, if the mode is switched to any one of the deep mode, the mix mode, and the floor mode, the control unit 20 is released from the "vent grill close compensation mode 22" (S117).

The control unit 20 released from the "vent grill close compensation mode 22 " returns to the original" normal mode "(S119).

At this time, when returning to the "normal mode ", the control unit 20 controls the air conditioner irrespective of the" discharge air temperature " Or the floor mode, the air conditioner is controlled on the basis of only the "discharge air temperature" of the discharge air temperature sensor 1 on the floor vent grille 7, 9 side.

On the other hand, if it is determined in step S115 that the "air discharge mode" has not been switched to any mode other than the vent mode, the bi-level mode, and the all mode (S115-1) Is turned OFF (S121).

As a result of the determination, if the start of the vehicle is off, the control unit 20 returns from the "vent grill close compensation mode 22" (S117) to the original "normal mode" (S119).

According to the present invention having such a constitution, at the time of closing the side vent grilles 3 and 5, the "discharge air temperature" on the closed side vent grilles 3 and 5 side is excluded and the floor vent grilles 7, It is possible to accurately control the air conditioning apparatus despite the detection error of the "discharge air temperature" due to the closing of the side vent grilles 3 and 5 since the air conditioner is controlled on the basis of the & have.

In addition, the air conditioning apparatus can be accurately controlled in spite of the detection error of the "discharge air temperature" due to the closing of the side vent grilles 3 and 5. Therefore, regardless of whether or not the side vent grilles 3 and 5 are closed It is possible to accurately control the indoor discharge air temperature.

In addition, since the temperature of the discharge air of the car can be accurately controlled irrespective of whether the side vents 3, 5 are closed or not, it is possible to keep the temperature of the car always pleasantly regardless of whether the side vents 3, .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

1: Discharge air temperature sensor
3: Driver side vent grill (Side Vent Grill)
5: Passenger Side Vented Grill
7: Floor Vent Grill
9: passenger seat floor vent grill 10, 12, 14: sensor
16: Temperature control switch 20:
22: vent grill close compensation mode 30: air conditioner compressor
32: Heater core 34: Blower
35: Temp door 40: Vent grill closing detection means
42: air discharge mode detecting means 44:

Claims (9)

A plurality of discharge air temperature sensors (1) installed inside at least two or more air discharge vent grills (3, 5, 7, 9) so as to be able to detect the temperature of the discharge air in the car, 1. A vehicle air conditioning system comprising a controller (20) for variably controlling an opening position of a tempo door (35)
When the specific air discharge vent grille 3, 5, 7, 9 among the air discharge vent grills 3, 5, 7, 9 provided with the discharge air temperature sensor 1 is closed, And a vent grill closing detecting means (40) for detecting the closing of the discharge vent grill (3, 5, 7, 9)
The control unit (20)
When the specific ventilation grille 3, 5, 7, 9 is detected as being closed by the ventilation grille close detection means 40, the specific air discharge vent grille 3, 5, 7, 9 closed while entering the ventilation grille close compensation mode 22 3, 5, 7, 9) side discharge air temperature sensor 1 and the discharge air temperature sensors 1, 2, 3, 5, 7, 9 on the other air discharge vent grilles 3, (35) based on the temperature of the discharged air inputted from the temperature sensor (35). The method according to claim 1,
The vent grill closing detecting means (40)
An air discharge mode sensing means (42) for sensing whether the air is discharged from all of the air discharge vent grills (3, 5, 7, 9) provided with the discharge air temperature sensor (1);
When it is determined that the air is discharged from all of the air discharge vent grilles 3, 5, 7 and 9 provided with the discharge air temperature sensor 1 as a result of the detection of the air discharge mode sensing means 42, It is determined whether or not a temperature deviation exceeding a preset reference temperature difference is generated among the discharged air temperatures inputted from the discharge air temperature sensors 1 of the respective air discharge vent grilles 3, 5, 7, and 9, When it is detected that a temperature deviation equal to or greater than the reference temperature deviation is detected, it is determined that the corresponding discharge air temperature sensor side air discharge vent grill 3, 5, 7, 9 of the detected discharge air temperature is closed And a control unit (20). 3. The method of claim 2,
The control unit (20)
When it is confirmed that the air is discharged from all the air discharge vent grilles 3, 5, 7, and 9 provided with the discharge air temperature sensor 1 as a result of the detection of the air discharge mode sensing means 42, After the reference time has elapsed,
And detects the occurrence of a temperature deviation of more than the reference temperature difference by comparing the discharge air temperatures inputted from the discharge air temperature sensors 1 of the respective air discharge vent grills 3, 5, 7, 9 with each other The air conditioner of the present invention. The method of claim 3,
The discharge air temperature sensor (1)
Of the air discharge vent grilles 3, 5, 7, and 9, the inside portion of the side vent grilles 3, 5 on the driver's seat and the front passenger's seat side and the inside portion of the floor vent grille 7, 9 on the driver's seat side and the passenger's seat side Respectively;
The vent grill closing detecting means (40)
It is possible to detect the closing of the side vent grille 3 on the driver's seat side among the air discharge vent grills 3, 5, 7 and 9 on which the discharge air temperature sensor 1 is installed, Detects the closing of the side vents (5), or detects the closing of both the side vents (3, 5) on the driver's seat and the passenger's seat side;
The control unit (20)
When it is confirmed that at least one of the side vent grills 3 and 5 on both the driver's seat and the front passenger's seat is closed from the vent grill close detecting means 40, Characterized in that the temperature of the discharged air of the sensor (1) is excluded and the tem- perature door (35) is controlled based on the discharged air temperature of the discharge air temperature sensor (1) on the floor vent grill Air conditioning system. 5. The method of claim 4,
The air discharge mode detection means (42) of the vent grill close detection means (40)
Vent mode or bi-level mode in which air is discharged to both side vent grilles (3, 5) and both floor vent grills (7, 9) on the driver's seat, (3, 5, 7, 9) in which the discharge air temperature sensor (1) is installed according to the detection of whether or not the air is discharged from the air discharge vent grill Air conditioning system. 6. The method of claim 5,
The control unit (20)
When the air discharge mode detecting means 42 detects that the air discharge mode is switched to another mode other than the vent mode, the bi-level mode and the all mode, the vent grill close compensation mode 22 is released, And returns to a normal mode of the air conditioner. The method according to claim 6,
The control unit (20)
When the air discharge mode sensing means 42 senses that the air discharge mode is switched to the deep mode (Def. Mode), the temperature of the tem- perature door 35 via the discharge air temperature of the discharge air temperature sensor 1 ) Is stopped,
When the air discharge mode is switched to the mix mode or the floor mode, the discharge air temperature sensor (42) on the side of the floor vent grill (7, 9) 1), the control unit controls the tem- per door (35) based on the temperature of the discharged air inputted in the vehicle. 8. The method according to any one of claims 1 to 7,
The control unit (20)
The air discharge vent grilles 3, 5, 7, and 7, which are not closed while maintaining the vent grill close compensation mode 22 until the start of the vehicle is turned off after entering the vent grill close compensation mode 22, 9) side air temperature sensor (1) based on the temperature of the discharged air of the discharge air temperature sensor (1). 9. The method of claim 8,
The control unit (20)
When the start of the vehicle is turned off, the vehicle returns to the original normal mode while being released from the vent grill close compensation mode (22).

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